java.lang.Exception: oracle.sysman.emSDK.webservices.wsdlapi.SoapTestException: XPath expression failed to execute. An error occurs while processing the XPath expression; the expression is ora:processXSLT('xsl/Transformation_1.xsl',bpws:getVariableData('outputVariable','payload')). The XPath expression failed to execute; the reason was: XML-22900: (Fatal Error) An internal error condition occurred.. Check the detailed root cause described in the exception message text and verify that the XPath query is correct.